diff --git a/scst.spec.in b/scst.spec.in
index 5376f17a7..31df8353c 100644
--- a/scst.spec.in
+++ b/scst.spec.in
@@ -163,7 +163,7 @@ rm -rf /usr/local/include/scst
 /sbin/depmod -a %{kversion}
 
 %files
-%defattr(-,root,root)
+%defattr(0644,root,root)
 %dir /lib/modules/%{kversion}/extra
 /lib/modules/%{kversion}/extra/fcst.ko
 /lib/modules/%{kversion}/extra/ib_srpt.ko
@@ -183,6 +183,7 @@ rm -rf /usr/local/include/scst
 /lib/modules/%{kversion}/extra/dev_handlers/scst_tape.ko
 /lib/modules/%{kversion}/extra/dev_handlers/scst_user.ko
 /lib/modules/%{kversion}/extra/dev_handlers/scst_vdisk.ko
+%defattr(-,root,root)
 %{_mandir}/man5/iscsi-scstd.conf.5.gz
 %{_mandir}/man8/iscsi-scst-adm.8.gz
 %{_mandir}/man8/iscsi-scstd.8.gz
diff --git a/scst/src/dev_handlers/scst_user.c b/scst/src/dev_handlers/scst_user.c
index 643e0ade8..dc2e7e7a3 100644
--- a/scst/src/dev_handlers/scst_user.c
+++ b/scst/src/dev_handlers/scst_user.c
@@ -462,7 +462,7 @@ static void dev_user_unmap_buf(struct scst_user_cmd *ucmd)
 		if (ucmd->buf_dirty)
 			SetPageDirty(page);
 
-		page_cache_release(page);
+		put_page(page);
 	}
 
 	kfree(ucmd->data_pages);
@@ -1298,7 +1298,7 @@ out_unmap:
 		ucmd->num_data_pages, rc);
 	if (rc > 0) {
 		for (i = 0; i < rc; i++)
-			page_cache_release(ucmd->data_pages[i]);
+			put_page(ucmd->data_pages[i]);
 	}
 	kfree(ucmd->data_pages);
 	ucmd->data_pages = NULL;
diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c
index c6a409a90..9171b1f9f 100644
--- a/scst/src/dev_handlers/scst_vdisk.c
+++ b/scst/src/dev_handlers/scst_vdisk.c
@@ -3056,7 +3056,7 @@ static void finish_read(struct scatterlist *sg, int sg_cnt)
 	for (i = 0; i < sg_cnt; ++i) {
 		page = sg_page(&sg[i]);
 		EXTRACHECKS_BUG_ON(!page);
-		page_cache_release(page);
+		put_page(page);
 	}
 
 	TRACE_EXIT();
@@ -3096,13 +3096,13 @@ static int prepare_read_page(struct file *filp, int len,
 
 	TRACE_ENTRY();
 
-	WARN((offset & ~PAGE_CACHE_MASK) + len > PAGE_CACHE_SIZE,
-	     "offset = %lld + %lld, len = %d\n", offset & PAGE_CACHE_MASK,
-	     offset & ~PAGE_CACHE_MASK, len);
+	WARN((offset & ~PAGE_MASK) + len > PAGE_SIZE,
+	     "offset = %lld + %lld, len = %d\n", offset & PAGE_MASK,
+	     offset & ~PAGE_MASK, len);
 	sBUG_ON(!mapping->a_ops);
 
-	index = offset >> PAGE_CACHE_SHIFT;
-	last_index = (last + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+	index = offset >> PAGE_SHIFT;
+	last_index = (last + PAGE_SIZE - 1) >> PAGE_SHIFT;
 
 find_page:
 	page = find_get_page(mapping, index);
@@ -3122,7 +3122,7 @@ find_page:
 			error = add_to_page_cache_lru(page, mapping, index,
 						      GFP_KERNEL);
 			if (error) {
-				page_cache_release(page);
+				put_page(page);
 				if (error == -EEXIST)
 					goto find_page;
 				else
@@ -3136,7 +3136,7 @@ find_page:
 		page_cache_async_readahead(mapping, ra, filp, page,
 					   index, last_index - index);
 	if (!PageUptodate(page)) {
-		if (inode->i_blkbits == PAGE_CACHE_SHIFT ||
+		if (inode->i_blkbits == PAGE_SHIFT ||
 		    !mapping->a_ops->is_partially_uptodate)
 			goto page_not_up_to_date;
 		if (!trylock_page(page))
@@ -3146,10 +3146,10 @@ find_page:
 			goto page_not_up_to_date_locked;
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 15, 0)
 		if (!mapping->a_ops->is_partially_uptodate(page,
-						offset & ~PAGE_CACHE_MASK, len))
+						offset & ~PAGE_MASK, len))
 #else
 		if (!mapping->a_ops->is_partially_uptodate(page, &desc,
-						offset & ~PAGE_CACHE_MASK))
+						offset & ~PAGE_MASK))
 #endif
 			goto page_not_up_to_date_locked;
 		unlock_page(page);
@@ -3165,20 +3165,19 @@ page_ok:
 	 */
 
 	isize = i_size_read(inode);
-	end_index = (isize - 1) >> PAGE_CACHE_SHIFT;
+	end_index = (isize - 1) >> PAGE_SHIFT;
 	if (unlikely(isize == 0 || index > end_index)) {
-		page_cache_release(page);
+		put_page(page);
 		goto eof;
 	}
 
 	/* nr is the maximum number of bytes to copy from this page */
 	if (index < end_index) {
-		nr = PAGE_CACHE_SIZE - (offset & ~PAGE_CACHE_MASK);
+		nr = PAGE_SIZE - (offset & ~PAGE_MASK);
 	} else {
-		nr = ((isize - 1) & ~PAGE_CACHE_MASK) + 1 -
-			(offset & ~PAGE_CACHE_MASK);
+		nr = ((isize - 1) & ~PAGE_MASK) + 1 - (offset & ~PAGE_MASK);
 		if (nr <= 0) {
-			page_cache_release(page);
+			put_page(page);
 			goto eof;
 		}
 	}
@@ -3208,7 +3207,7 @@ page_not_up_to_date:
 	/* Try to get exclusive access to the page. */
 	error = lock_page_killable(page);
 	if (unlikely(error != 0)) {
-		page_cache_release(page);
+		put_page(page);
 		goto err;
 	}
 
@@ -3216,7 +3215,7 @@ page_not_up_to_date_locked:
 	/* Did it get truncated before we got the lock? */
 	if (!page->mapping) {
 		unlock_page(page);
-		page_cache_release(page);
+		put_page(page);
 		goto find_page;
 	}
 
@@ -3237,18 +3236,18 @@ readpage:
 	error = mapping->a_ops->readpage(filp, page);
 	if (unlikely(error)) {
 		if (error == AOP_TRUNCATED_PAGE) {
-			page_cache_release(page);
+			put_page(page);
 			goto find_page;
 		}
 		WARN(error >= 0, "error = %d\n", error);
-		page_cache_release(page);
+		put_page(page);
 		goto err;
 	}
 
 	if (!PageUptodate(page)) {
 		error = lock_page_killable(page);
 		if (unlikely(error != 0)) {
-			page_cache_release(page);
+			put_page(page);
 			goto err;
 		}
 		if (!PageUptodate(page)) {
@@ -3257,11 +3256,11 @@ readpage:
 				 * invalidate_mapping_pages got it
 				 */
 				unlock_page(page);
-				page_cache_release(page);
+				put_page(page);
 				goto find_page;
 			}
 			unlock_page(page);
-			page_cache_release(page);
+			put_page(page);
 			error = -EIO;
 			goto err;
 		}
@@ -3294,7 +3293,7 @@ static int prepare_read(struct file *filp, struct scatterlist *sg, int sg_cnt,
 		if (res <= 0)
 			goto err;
 		if (res < sg[i].length) {
-			page_cache_release(page);
+			put_page(page);
 			goto err;
 		}
 		sg_assign_page(&sg[i], page);